/**
 * Copyright (c) 2015-2018, Michael Yang 杨福海 (fuhai999@gmail.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 *  http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.jboot.web;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class JbootRequestContext {
    private static ThreadLocal<HttpServletRequest> requests = new ThreadLocal<>();
    private static ThreadLocal<HttpServletResponse> responses = new ThreadLocal<>();


    public static void handle(HttpServletRequest req, HttpServletResponse response) {
        requests.set(req);
        responses.set(response);
    }

    public static HttpServletRequest getRequest() {
        return requests.get();
    }

    public static HttpServletResponse getResponse() {
        return responses.get();
    }

    public static void release() {
        requests.remove();
        responses.remove();
    }


    public static <T> T getRequestAttr(String key) {
        HttpServletRequest request = requests.get();
        if (request == null) {
            return null;
        }

        return (T) request.getAttribute(key);
    }

    public static void setRequestAttr(String key, Object value) {
        HttpServletRequest request = requests.get();
        if (request == null) {
            return;
        }

        request.setAttribute(key, value);
    }

}
